Fabrication of titanium dioxide nanomaterial for implantable highly flexible composite bioelectrode for biosensing applications.

Abstract:

:Implantable and stretchable electrodes have managed to progress the medical field from a medical diagnosis aspect to a patient treatment level. They offer the ability to detect biosignals and conduct electrical current to tissues that aid in muscle stimulation and axon regeneration. Current conventional electrodes are fabricated from stiff and very expensive, precious metals such as platinum. In this work, novel, low cost, and highly flexible electrode materials were fabricated based on titanium dioxide (TiO2) and polymethyl methacrylate (PMMA) supported by a silicone polymer matrix. The electrode materials were characterized by their electrochemical, mechanical, and surface properties. The electrodes possessed high flexibility with Young's modulus of 235 kPa, revealing highly stretchable characteristics. The impedance at 1 kHz was around 114.6 kΩ, and the charge capacity was 1.23 mC/cm2. The fabricated electrodes appeared to have a smooth surface, as seen in the scanning electron microscope micrographs, compared with electrodes in the literature. Long-time stability tests revealed an overall decrease in impedance and an increase in the charge capacity up to 475% of the initial value within three weeks.

journal_name

Chemosphere

journal_title

Chemosphere

authors

Mohamed O,Al-Othman A,Al-Nashash H,Tawalbeh M,Almomani F,Rezakazemi M

doi

10.1016/j.chemosphere.2021.129680

subject

Has Abstract

pub_date

2021-01-18 00:00:00

pages

129680

eissn

0045-6535

issn

1879-1298

pii

S0045-6535(21)00149-1

journal_volume

273

pub_type

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